body, html {
  margin:0;
  padding:0;
  display:block;
  width:100vw;
  height:100vh;
  overflow:hidden;
  background-color: black;
}

.container{
  display:flex;
  height: 100%;
	justify-content: center;
	align-items: center;
}

canvas {
  padding-left: 0;
  padding-right: 0;
  margin: auto;
  overflow: auto;
  object-fit: contain;
  background-color: black;
  max-height: 100%;
  max-width: 100%;  
}

#complete_span {
  visibility: hidden;
}